sorrow vs pity

sorrow and pity both are nouns.

Word	Noun	Adjective	Verb	Adverb
sorrow	Yes	No	Yes	No
pity	Yes	No	Yes	No

As verbs, pity is a hyponym of sorrow; that is, pity is a word with a more specific, narrower meaning than sorrow:

Other hyponyms of sorrow include mourn, compassionate, condole with, feel for, sympathize with.

sorrow (noun)	pity (noun)
something that causes great unhappiness	the humane quality of understanding the suffering of others and wanting to do something about it
an emotion of great sadness associated with loss or bereavement	an unfortunate development
sadness associated with some wrong done or some disappointment	a feeling of sympathy and sorrow for the misfortunes of others
the state of being sad

sorrow (verb)	pity (verb)
feel grief	share the suffering of